LOCAL INFORMATION

13.3.1.L1
Jersey Cost of Living Index (RPI) - Quarterly figures and how to calculate increases over period of time, e.g. 3 years

Extent: Jersey
Updated 28 July 2021
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What is the Cost of Living Index

1.  Jersey's Cost of Living Index is also known as the Retail Price Index. It is not strictly a 'cost of living' index as the items used to identify changes in prices in the island cover a wide area, but are not necessarily items which would be essential to living. Prices of goods and services are monitored quarterly (2,500 prices are involved) by staff employed by the Statistics Unit, telephone 440423.

2.  The price changes are expressed as percentage increases or decreases relative to June 2000 when the Index was given a value of 100. The percentage change over the last three years is a figure often requested for purposes of rental increases.

The latest RPI Report and an RPI Calculator can be found at https://www.gov.je/Government/JerseyInFigures/BusinessEconomy/Pages/Inflation.aspx

3. Figures for the Retail Price Index, excluding the costs of house purchase, RPI[X] are also available from 1995 to date.

4. A manual calculation can be performed using the table below.

To find increase over a period when there has been a base change within the period being calculated - this example takes into account the resetting of base and has been calculated over a five year period

Example for September 1997 - September 2002

 Take base for end of period and multiply by 1.716Subtract the base from beginning of period 109.7 x 1.716 = 188.25153.8034.45 Calculate Therefore percentage increase over the period (5 years) 34.45 x 100153.8= 22.40%

To find increase over a period when the base has not been reset within the period - this example is after base was reset in June 2000 so ignores the old base, it is over a period of three years

Example for September 2000 to September 2003

 Take base from end of the periodSubtract the base from the beginning of the period 113.9101.112.8 Calculate Divided by the base from the beginning of the periodTherefore percentage increase over the period (3 years) 12.8 x 100101.1= 12.66%

NOTE: The percentage increase can be calculated over any period using the two formulas above, just check to see if there has been a base change within the period being calculated and use the appropriate formula.

 QUARTER DATE CURRENT BASE ANNUAL INCREASE INCREASE OVER 3 YEARS 6/2000 OLD BASE - 171.6NEW BASE - 100.0 4.4 12.97 9/2000 101.1 4.6 12.8 12/2000 101.6 4.0 12.85 3/2001 103.0 4.0 12.43 6/2001 103.9 3.9 12.13 9/2001 105.3 4.2 12.65 12/2001 104.7 3.1 11.80 3/2002 107.1 4.0 13.10 6/2002 108.3 4.2 13.11 9/2002 109.7 4.2 13.53 12/2002 109.8 4.9 12.35 3/2003 112.4 4.9 13.52 6/2003 112.9 4.2 12.90 9/2003 113.9 3.8 12.66 12/2003 114.2 4.0 12.40 3/2004 116.6 3.7 13.20 6/2004 118.3 4.8 13.86 9/2004 120.3 5.6 14.24 12/2004 120.3 5.3 14.90 3/2005 121.9 4.5 13.82 6/2005 122.6 3.6 13.20 9/2005 122.7 2.0 11.9 12/2005 123.0 2.2 12 3/2006 124.8 2.4 11 6/2006 126.2 2.9 11.8 9/2006 127.1 3.6 11.6 12/2006 127.5 3.7 11.6 3/2007 130.3 4.4 11.75 6/2007 131.6 4.3 11.24 9/2007 132.1 3.9 11.67 12/2007 133.3 4.5 10.80 3/2008 134.5 3.2 10.33 6/2008 139.0 5.6 13.37 9/2008 140.5 6.4 14.50 12/2008 137.7 3.3 11.95 3/2009 137.3 2.1 10.02 6/2009 138.5 -0.4 8.88 9/2009 139.6 -0.6 9.83 12/2009 140.0 1.7 9.80 3/2010 141.7 3.2 8.75 6/2010 142.4 2.8 8.21 9/2010 142.6 2.1 7.95 12/2010 143.2 2.3 7.43 03/2011 146.1 3.1 8.62 06/2011 148.8 4.5 7.05 09/2011 150.3 5.4 6.97 12/2011 150.4 5.0 9.22 03/2012 153.0 4.7 11.43 06/2012 153.3 3.0 10.69 09/2012 154.5 2.8 10.67 12/2012 153.5 2.1 9.64 03/2013 155.2 1.4 9.53 06/2013 155.6 1.5 9.27 09/2013 156.4 1.2 9.68 12/2013 156.4 1.9 9.21 03/2014 157.9 1.7 8.07 06/2014 158.1 1.6 6.25 09/2014 159.3 1.9 5.99 12/2014 158.5 1.3 5.38 03/2015 158.9 0.6 3.85 06/2015 159.6 0.9 4.10 09/2015 159.5 0.1 3.24 12/2015 160.0 0.9 4.23 03/2016 161.2 1.4 3.86 06/2016 162.0 1.5 4.11 09/2016 162.7 2.0 4.02 12/2016 163.0 1.9 4.21 03/2017 165.9 2.9 5.07 06/2017 166.1 2.5 5.06 09/2017 167.8 3.1 5.87 12/2017 168.8 3.6 6.49 03/2018 171.2 3.2 7.74 06/2018 173.5 4.5 8.70 09/2018 174.2 4.3 9.70 12/2018 175.4 3.9 5.75 03/2019 177.3 3.6 5.88 06/2019 178.4 2.8 6.05 09/2019 179.7 2.7 6.21 12/2019 179.8 2.5 6.39 03/2020 182.1 2.7 6.58 06/2020 179.3 0.5 6.70 09/2020 181.4 0.9 6.84 12/2020 181.4 0.9 6.92 03/2021 184.1 0.8 6.28 06/2021 185.5 3.5 6.31